title: Cerebral perfusion scanning in treating AIDS dementia: a pilot study.
abstract: Acquired immunodeficiency syndrome (AIDS) dementia complex (ADC) is a common effect of the AIDS virus. We studied the regional cerebral blood flow of patients with early ADC and its response to atevirdine mesylate.
  
  
  METHODS
  Ten men with early ADC, who had failed or were intolerant to zidovudine or didanosine therapy, were treated with atevirdine mesylate for 12 wk. Cerebral perfusion SPECT using 99mTc-HMPAO was performed at Week 0 and Week 12. SPECT images were analyzed qualitatively and semiquantitatively.
  
  
  RESULTS
  The cerebral perfusion abnormalities in early ADC were usually mild and characteristically involved the cortices and periventricular regions bilaterally and symmetrically. Four patients were able to complete the protocol. Three of these patients responded to atevirdine clinically, two of whom showed improvement in their Week 12 SPECT images. The other responder had an essentially unchanged image. The patient who did not respond to atevirdine showed a definite deterioration in cerebral perfusion.
  
  
  CONCLUSIONS
  Cerebral perfusion SPECT is useful in detecting and assessing therapeutic responses in ADC. The preliminary results of atevirdine in treating ADC are promising and need further investigation.
authors.affiliation: Department of Nuclear Medicine, Center for Immunology, St. Vincent's Hospital, Sydney, Australia.
authors.forename: E R
authors.initials: ER
authors.lastname: Szeto
authors.forename: J
authors.initials: J
authors.lastname: Freund
authors.forename: B J
authors.initials: BJ
authors.lastname: Brew
authors.forename: A
authors.initials: A
authors.lastname: Loder
authors.forename: M R
authors.initials: MR
authors.lastname: Griffiths
mesh_terms: D015526:AIDS Dementia Complex / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000503:physiopathology; D000328:Adult; D019380:Anti-HIV Agents / Q000627:therapeutic use; D001921:Brain / Q000000981:diagnostic imaging; D002560:Cerebrovascular Circulation; D006801:Humans; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D010879:Piperazines / Q000627:therapeutic use; D019275:Radiopharmaceuticals; D019690:Technetium Tc 99m Exametazime; D015899:Tomography, Emission-Computed, Single-Photon
chemical_list: D019380:Anti-HIV Agents; D010879:Piperazines; D019275:Radiopharmaceuticals; D019690:Technetium Tc 99m Exametazime; C076632:atevirdine